Thomsonite-Ca, Analcime

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Colorful, well-developed spheroids of pastel-orange, bladed thomsonite attractively cover the mounded matrix of sharp, glassy, colorless analcime crystals on this fine combination zeolite specimen from the Skookumchuck Dam locality of Washington. Crystallized thomsonite is rare from any locality compared to other zeolite species. Ex. Rice NW Museum Collection.